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Backlight module and display device thereof

A backlight module and light source technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of reducing the visibility of HUD display screens and reducing contrast, and achieve the effects of uniform brightness, improved contrast, and reduced power consumption

Active Publication Date: 2017-10-27
XIAMEN TIANMA MICRO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when a certain area is illuminated, the light will irradiate from the illuminated area to the adjacent dark area, and even make the light irradiate the entire backlight module, which greatly reduces the contrast, thereby reducing the reliability of the HUD display screen. Visibility

Method used

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  • Backlight module and display device thereof
  • Backlight module and display device thereof

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Embodiment Construction

[0047] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0048] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0049] It should be understood that the term "and / or" used herein is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and / or B, which may mean that A exists alone, and A and B exist simultaneously. B, there are three situations of B alone. In addition, the character " / " in this article generally indicates that the contextual objects are an "or" relat...

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Abstract

An embodiment of the invention provides a backlight module and a display device thereof and relates to the technical field of display. The backlight module and the display device are used for improving contrast of displayed pictures. The backlight module comprises a light source, an optical film and a light guide plate arranged between the light source and the optical film, the light guide plate comprises multiple protrusions arranged on one side close to the light source, the top of each protrusion is one end, close to the light source, of the protrusion, the top of each protrusion is provided with at least one hemispherical deboss, radius of each hemispherical deboss is smaller than a distance from the top face of the corresponding protrusion to the bottom face of the light guide plate, and the bottom face of the light guide plate is one side, away from the light source, of the light guide plate; the light source comprises multiple luminous elements which are arranged corresponding to the debosses, and the backlight module further comprises reflection portions arranged on the side surfaces of the protrusions. The backlight module is used in the display device.

Description

【Technical field】 [0001] The invention relates to the field of display technology, in particular to a backlight module and a display device thereof. 【Background technique】 [0002] HUD (Head Up Display, head-up display) provides light source through the backlight module, and through TFTLCD (ThinFilm Transistor-Liquid Crystal Display, Thin Film Transistor-Liquid Crystal Display), forms a display screen visible to the driver on the front windshield of the car. [0003] Since the HUD is mainly used outdoors, and the HUD needs two reflections to form a visible image on the windshield, the display module of the HUD needs to have high brightness and contrast, so the HUD backlight module needs to have a high High brightness, so that the backlight module consumes a lot of power. [0004] In the prior art, a local backlight adjustment (Local Dimming) technology is generally used to reduce power consumption and improve contrast at the same time. That is, the backlight of the area th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133605G02F1/133606G02F1/133607
Inventor 洪耀武
Owner XIAMEN TIANMA MICRO ELECTRONICS
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